<style>
.menu{
   position: absolute;
   top:0px;
   left:0px;
   width:200px;
   bottom:0px;
   background:gray;
}
.from{
  text-align:center;
  color:green;
}
a{
  text-decoration:none;
}
</style>
<div class="menu">
<div class="from">
  <a href="/vueform"><h1>表单</h1></a>
</div>
<div class="from">
  <h1>方法</h1>
</div>
<div class="from">
  <h1>css与style</h1>
</div>
</div>